Effective: January 1, 2026
Version: 1.0
Your memories stay on your device. When you ask questions, we send only the question and relevant snippets to AI providers for answers. We don't sell your data. You can export or delete everything anytime.
Operator: Second Brain ("we," "us," "our")
Website: 2ndbrainai.app
Contact: support@2ndbrainai.app
This Privacy Policy explains how we handle information when you use Second Brain (the "Service"). The Service is currently available only in the United States.
We collect only what's necessary to provide the Service:
Your memories and embeddings are stored locally on your iPhone. They never leave your device unless you use the Q&A feature.
When you ask a question, we send:
This data is sent to OpenAI to generate an answer. We don't store this data on our servers.
Account credentials are managed by Supabase (our authentication provider) with industry-standard security.
If we add cloud backup, it will be:
We use your information to:
We DO NOT:
We work with trusted service providers:
You have the right to:
California residents have additional rights:
The Service is not intended for children under 17. We do not knowingly collect information from children. If you believe a child has provided information, please contact us immediately.
We implement security measures including:
However, no system is 100% secure. Please:
The Service is currently intended for U.S. users only. If you're outside the U.S., you acknowledge that any data processing occurs in the United States.
The Service does not track you across apps or websites. We don't respond to Do Not Track signals because we don't engage in tracking.
We may update this Privacy Policy. If we make material changes, we'll notify you through:
Continued use after changes means you accept the updated policy.
For privacy questions or requests:
Email: support@2ndbrainai.app
Website: 2ndbrainai.app
Subject Line: "Privacy Request"
Location: California, USA
We'll respond within 3 business days.
This Privacy Policy is effective as of January 1, 2026.
Last Updated: January 1, 2026
Version: 1.0